04/20/2026
Up for sale is a complete, recently built and real LS6 engine. I restored an LS6 Chevelle for a customer and he wanted to put a driver (donor) engine in the car while he owned it and save the original engine until he sold the car which he recently did. This engine (not original to that car) was totally rebuilt in February of 2017 and estimates he has only put less than 300 miles on it since. This is a 3963512 block, cast on April 6, 1970, assembled on June 4th of 1970 and with a partial VIN of 10R257151. The engine has never been decked and the broach marks are still visible. The heads are 2964291 dated E 8 70 and E 9 70, the intake is 3963569 and water pump is 3989811. The engine was rebuilt with a Comp Cams CL11-671-4 Nostalgia solid lifter cam with very similar specs to the original and was purchased well before the flat tappet cam and lifter issue we hear of today. Also included is the original HP timing chain cover with the angled timing tab. The 1111437 9M10 distributor does not come with the engine but may be purchased separately.
The engine was dynoed in October of 2017 with a hp output of 460.2 and a torque of 496.6. The only non stock thing done to this engine was a .030 over bore, all other internal items in this engine are stock LS6 with the exception of a double roller timing chain and the valvetrain. Total cost of the engine rebuild was $5,492.50 in 2017 which is equivalent to about $7,400 in today’s money. One would be hard pressed to start from scratch and build this for less money today. This engine builder has built over 20 LS6 engines for me since moving my restoration shop to Illinois and never had any issues with any of them.
The engine is currently mounted in a Lane Automotive SCR5115 engine crate complete with engine mounts. These crates have a retail of $445 and the engine will be shipped in this crate for you to keep. It is currently ready to ship. All you will need to do is add a carburetor and distributor and you are good to go. Was $15,000, NEW PRICE $12,900 and you arrange shipping. This engine is dynoed and broke in already with 300 miles driven on it. Engine is located in Pleasant Plains, IL.
SOLD
Please message me for more information or if interested.
Rick Nelson
MuscleCar Restoration and Design